/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-  */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _MDB_
#  include "mdb.h"
#endif

#ifndef _MORK_
#  include "mork.h"
#endif

#ifndef _MORKBLOB_
#  include "morkBlob.h"
#endif

#ifndef _MORKENV_
#  include "morkEnv.h"
#endif

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/*static*/ void morkBuf::NilBufBodyError(morkEnv* ev) {
  ev->NewError("nil mBuf_Body");
}

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/*static*/ void morkBlob::BlobFillOverSizeError(morkEnv* ev) {
  ev->NewError("mBuf_Fill > mBlob_Size");
}

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mork_bool morkBlob::GrowBlob(morkEnv* ev, nsIMdbHeap* ioHeap,
                             mork_size inNewSize) {
  if (ioHeap) {
    if (!mBuf_Body)  // no body? implies zero sized?
      mBlob_Size = 0;

    if (mBuf_Fill > mBlob_Size)  // fill more than size?
    {
      ev->NewWarning("mBuf_Fill > mBlob_Size");
      mBuf_Fill = mBlob_Size;
    }

    if (inNewSize > mBlob_Size)  // need to allocate larger blob?
    {
      mork_u1* body = 0;
      ioHeap->Alloc(ev->AsMdbEnv(), inNewSize, (void**)&body);
      if (body && ev->Good()) {
        void* oldBody = mBuf_Body;
        if (mBlob_Size)  // any old content to transfer?
          MORK_MEMCPY(body, oldBody, mBlob_Size);

        mBlob_Size = inNewSize;  // install new size
        mBuf_Body = body;        // install new body

        if (oldBody)  // need to free old buffer body?
          ioHeap->Free(ev->AsMdbEnv(), oldBody);
      }
    }
  } else
    ev->NilPointerError();

  if (ev->Good() && mBlob_Size < inNewSize)
    ev->NewError("mBlob_Size < inNewSize");

  return ev->Good();
}

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morkCoil::morkCoil(morkEnv* ev, nsIMdbHeap* ioHeap) {
  mBuf_Body = 0;
  mBuf_Fill = 0;
  mBlob_Size = 0;
  mText_Form = 0;
  mCoil_Heap = ioHeap;
  if (!ioHeap) ev->NilPointerError();
}

void morkCoil::CloseCoil(morkEnv* ev) {
  void* body = mBuf_Body;
  nsIMdbHeap* heap = mCoil_Heap;

  mBuf_Body = 0;
  mCoil_Heap = 0;

  if (body && heap) {
    heap->Free(ev->AsMdbEnv(), body);
  }
}

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